<template>
    <div class="upload-container">
        <el-upload
            :data="dataObj"
            :multiple="false"
            :show-file-list="false"
            :on-success="handleImageSuccess"
            class="image-uploader"
            drag
            action="https://httpbin.org/post"
            :on-change="handleChange"
            :http-request="myUploader"
            >
            <i class="el-icon-upload" />
            <div class="el-upload__text">
                将文件拖到此处，或<em>点击上传</em>
            </div>
        </el-upload>
        <div class="image-preview image-app-preview">
            <div v-show="imageUrl.length>1" class="image-preview-wrapper">
                <img :src="imageUrl">
                <div class="image-preview-action">
                <i class="el-icon-delete" @click="rmImage" />
                </div>
            </div>
        </div>
        <div class="image-preview">
            <div v-show="imageUrl.length>1" class="image-preview-wrapper">
                <img :src="imageUrl">
                <div class="image-preview-action">
                <i class="el-icon-delete" @click="rmImage" />
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import { getToken } from '@/api/qiniu';
import { uploadCover } from "@/api/article";

export default {
    name: 'SingleImageUpload3',
    props: {
        value: {
        type: String,
        default: ''
        }
    },
    data() {
        return {
            tempUrl: '',
            dataObj: { token: '', key: '' },
            file: {}
        }
    },
    computed: {
        imageUrl() {
            return this.value
        }
    },
    methods: {
        handleChange(file) {
            this.file = file.raw
        },
        myUploader() {
            console.log();
            let formData = new FormData();
            formData.append("file", this.file);
            uploadCover(formData).then(response => {
                console.log(response);
                this.emitInput(response.data)
            })
        },


        rmImage() {
            this.emitInput('')
        },
        emitInput(val) {
            this.$emit('input', val)
        },
        handleImageSuccess(file) {
            console.log(file);
            this.emitInput(file.files.file)
        },
        beforeUpload() {
            const _self = this
            return new Promise((resolve, reject) => {
                getToken().then(response => {
                const key = response.data.qiniu_key
                const token = response.data.qiniu_token
                _self._data.dataObj.token = token
                _self._data.dataObj.key = key
                this.tempUrl = response.data.qiniu_url
                resolve(true)
                }).catch(err => {
                console.log(err)
                reject(false)
                })
            })
        }
    }
}
</script>

<style lang="scss" scoped>
@import "~@/styles/mixin.scss";
.upload-container {
  width: 100%;
  position: relative;
  @include clearfix;
  .image-uploader {
    width: 35%;
    float: left;
  }
  .image-preview {
    width: 200px;
    height: 200px;
    position: relative;
    border: 1px dashed #d9d9d9;
    float: left;
    margin-left: 50px;
    .image-preview-wrapper {
      position: relative;
      width: 100%;
      height: 100%;
      img {
        width: 100%;
        height: 100%;
      }
    }
    .image-preview-action {
      position: absolute;
      width: 100%;
      height: 100%;
      left: 0;
      top: 0;
      cursor: default;
      text-align: center;
      color: #fff;
      opacity: 0;
      font-size: 20px;
      background-color: rgba(0, 0, 0, .5);
      transition: opacity .3s;
      cursor: pointer;
      text-align: center;
      line-height: 200px;
      .el-icon-delete {
        font-size: 36px;
      }
    }
    &:hover {
      .image-preview-action {
        opacity: 1;
      }
    }
  }
  .image-app-preview {
    width: 320px;
    height: 180px;
    position: relative;
    border: 1px dashed #d9d9d9;
    float: left;
    margin-left: 50px;
    .app-fake-conver {
      height: 44px;
      position: absolute;
      width: 100%; // background: rgba(0, 0, 0, .1);
      text-align: center;
      line-height: 64px;
      color: #fff;
    }
  }
}
</style>
